Learn more about our company

Who We Are

Metal-Chek this is a 100% brazilian company, leader in the market for a non-destructive testing the methods of the Liquid Penetrant (LP), Magnetic Particle (MP) and Leak detection (DV).

It develops, manufactures and commercializes consumables, equipment and accessories for non-destructive testing by the methods of Liquid Penetrant, Magnetic Particle and Leak detection; as well as other special chemical products.

Located in the city of Bragança Paulista, in the interior of São Paulo, in an area of 10.000 m²The production areas of the industry are divided between the LP sector, the MP sector and the aeronautical sector.

Metal-Chek is a direct supplier to customers all over Brazil and counts on a commercial team, supported by a technical team, committed to offering the best solution for the customers.

Since its foundation, the company has stood out for the quality of its products and service. It keeps a large stock of products for prompt delivery, so that all orders placed are met in a timely manner efficient way.

The Products Metal-Chek have their manufacturing parameters controlled according to AMS 2644 and PETROBRAS N 2370 to meet the standards PETROBRAS N1596 and N1598Code ASME Section VISO 3452ASTM E 1417, E 1444 and E709.

The management systems of the Metal-Chek  are certified according to ISO 9001.

Metal-Chek, quality is our brand!


Our Story

Metal-Chek do Brasil Ind. e Com Ltda, was founded in June 1982 as part of the federal government's import nationalization policy. The company's development grew significantly from 1984 onwards. From a company that exclusively manufactured products for testing by Visible Penetrant Liquids, it went on to manufacture Fluorescent Penetrant Liquids and Magnetic Particles, as well as portable and stationary equipment for testing by magnetic particles.

In 1992, with the death of its founder, Mr. Nabil Gebrael, the company was taken over by Mrs. Maria Izabel L. Gebrael.

Year after year, the company has increasingly won the trust of its customers and has become a leading supplier of consumables for Non-Destructive Testing by the Liquid Penetrant and Magnetic Particle Methods.

Over the last few years, Metal-Chek has had important achievements:

  • 1994: first company in the sector to obtain ISO 9002 certification.
  • 2002: ISO 9001:2000 certification and start of production of Dubl-Chek products under license from Sherwin Inc.
  • 2004: obtains NBR 15100:2004 certification from the CTA and becomes a QPL-listed manufacturer of Dubl-Chek products.
  • 2010: move to the city of Bragança Paulista in its own headquarters.
  • 2013: Start of nationalization of Spectroline leak detection products.
  • 2015: includes in its corporate purpose the manufacture of chemical products for third parties.
  • 2018: recertification of the quality management system according to ISO 9001:2015.

In this way, Metal-Chek secures its leading role in the chemical products scene for Liquid Penetrant and Magnetic Particle Testing and diversifies by entering the area of private labeling manufacturing services. The board of directors has been made up of the second generation of the family, Andréia Maria L G P Sobreira, Fernanda Cristina L Gebrael de Moura and Luciana Julia Laczko Gebrael, since 2015.

Metal-Chek, a company that values the customer-supplier relationship, the management-employee relationship and, above all, its social and environmental aspects as an active agent in society and in the NDT (non-destructive testing) community.



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Metal-Chek operates in its own headquarters, in Bragança Paulista, 80km from the city of São Paulo in a 10,000m² area specially planned and built to produce its Penetrating Liquids, Magnetic Particles, in order to increasingly guarantee the quality of processes and products.

It has three modern laboratories: technical, development, and quality to: Ensure and improve more and more the quality of the products;
Perform production follow-up tests.

Concerned with environmental issues, the building has rainwater collection points for reuse in bathrooms and gardens, and a waterproofing treatment on the floor to avoid contamination; treatment of all chemical effluents generated so that they can be discharged into the sewer free of contamination; education, incentive, and application of selective collection in all areas of the company (from production to the office, from the cafeteria to the reception) and, finally, the construction of a 3,000 m² green area, with a vegetable garden and fruit trees.

All this to promote awareness of environmental issues and their impacts, preserving the environment around them.

It is Metal-Chek searching more and more solutions to meet the needs of its customers and preserving the environment.